WordNet (r) 3.0 (2006):

unitisation
    n 1: (psychology) the configuration of smaller units of
         information into large coordinated units [syn:
         unitization, unitisation, chunking]
    2: the act of packaging cargo into unit loads [syn:
       unitization, unitisation]
    3: conversion of an investment trust into a unit investment
       trust [syn: unitization, unitisation]
    4: the joint development of a petroleum resource that straddles
       territory controlled by different companies [syn:
       unitization, unitisation]